<span> the answer is a Bronsted-Lowry base </span>
Answer:
See Explanation and Attachments => New concentration A = 0.10 mol/L
Explanation:
Explanation:
A + B ⇄ C + D
C(i): 0.20 mol 0.20 mol 0.4 mol 0.4 mol
ΔC: -0.10 mol -0.1 mol +0.1 mol +0.1 mol
C(eq): 0.10 mol 0.10 mol 0.5 mol 0.5 mol
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=> A & B react to form more C & D as reaction shifts right to establish new equilibrium with new concentration values. See attached diagram. => I call this the 'chemical see-saw analysis'.
=> Also attached is a summary of stress factor effects of temperature and pressure-volume changes.
Answer:
Explanation:
So lead has a density of 11.34 g/cm^3 according to a quick google search. If this is not the value you are using, just replace what you do use where I put 11.34
knowing the density, if we knew the volume we could find the mass by unit conversion since g/cm^3 * cm^3 = g, so we would multiply the density by the volume. And the question gives us the means to find the volume.
Volume of a cylinder is area of its base times the height. Area of its base, a circle (since it's a cylinder) is π*r^2 where r is the radius and π is roughly 3.14. I will leave π as the symbol until the end so it's easier to deal with.
So volume = area * height = πr^2*h = π4^2*10 = 160π (I moved pi to the back). It's units are cm^3 since both measurements were in cm. You can feel free to multiply π by 160 now if you like. Anyway, now that we have the volume we multiply it by the density. so 160π cm^3 * 11.34 g/cm^3 = 1814.4π g. If you multiply that by 3.14 for π you get 5697.216 g. And there's the mass. Let em know if there was something you didn't understand.
65ml x 1.3 molar = 0.0845 moles solution #1
0.0845 moles / .208 L = 0.4 M
0.4M × 104 ml / 213 ml = .20 M after sig figs
